Jacquard mechanism



H. JANSSEN. JAQOUARD MECHANISM. APPLICATION FILED FEB. 11, I920.

Patented May 11, 1920.

Henry Jazzssezz,

avweu to'z,

UNITED STATES PATENT onrroin.

HENRY JANSSEN, OF WYOMISSING, PENNSYLVANIA, ASSIGNOR T0 TEXTILE MACHINE WORKS, OF WYOMISSI'NG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

JAGQUARD MECHANISM.

Application filed February 11, 1920.

T 0 all whom it may concern:

Be it known that I, HENRY JANssnN, a citizen of the United States, residing at WVyomissing, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Jacquard Mechanism, of which the following is a specification.

My invention relates to jacquard mechanism for lace braiding machines and the like, and it consists in improved means for maintaining proper seating of the perforated cards upon the faces of the prismatic card-belt drum, as fully described in connection with the accompanying drawing and specifically pointed out in the claims.

Figure 1 is a full length view of the mounted drum with jacquard cards thereon and shown partly in longitudinal section.

Fig. 2 is a crosssectional view on the line 2-2 of Fig. 1.

Fig. 3 is an enlarged longitudinal section of a portion only of the drum and an applied sleeve, and Fig. 4 is a corresponding end view of the same.

The acquard cards 5 connected by lacings 6 form a belt which is carried upon a prismatic drum '7 having a periodic turning movement adapted to carry successive cards into cooperative relation with sinker wires 8.

These pattern cards which are perforated to permit the passage therethrough of determined wires only into perforations 9 of the cards, require to be flatly placed in each case upon a corresponding face of the prismatic drum, in proper register with the perforations 4 in the latter, in order to insure satisfactory operation.

As they are commonly made economically of thin card board which is subject to expansion and contraction under different atmospheric conditions, convenient provision for securing their proper seating upon the drum at all times is of practical importance. My invention consists in the improved means set forth for readily insuring such proper seating of the cards.

The prismatic drum 7 is of tubular form, with a main body portion of polygonal cross-section and providing a series of card supporting faces 10 as desired, but with end portions 11, 11 of reduced cylindrical form, for the reception of longitudinally adjustable sleeves 12, 12 as hereinafter described.

Specification of Letters Patent.

Patented May 11, 1920.

Serial No. 357,844.

As shown this drum is secured to asuitably mounted shaft 13, by means of inserted bushings 14: forming part of ratchet Wheels 15, the periodic turning movements being imparted to the drum in well known manner.

The adjustable sleeves 12 fit suitably upon the reduced drum ends 11, and have a perimeter corresponding with the inscribed circle 16 of the prismatic drum body so that the extending ends of the cards 5 will normally bear thereon. These ends of the cards are provided with guide apertures 20, and the end of each sleeve adjacent the prismatic body of the drum is provided with a circular series of conical projections 21, formed by radially inserted pins as indicated, and corresponding in number with the card sup porting faces 10 of the drum; so that when the sleeves are properly adjusted and secured upon the drum ends 11, the successive cards will be so engaged by said conical projections as to be closely seated upon the corresponding drum faces.

A clamping screw 25 extending through a slotted opening 26 in each sleeve, provides for rigidly fixing it in properly adjusted position; and a circular groove or reduction 27 of each sleeve provided for clearance of the end lacings 6 which hold the card ends firmly upon the adjusted sleeve projections 21 to flatly position them upon the respective drum faces 10. Whenever there is any indication of buckling or undue stretching action upon the cards, such as is apt to occur from changing atmospheric conditions, the sleeves are readily and accurately readj usted as required.

lVhat I claim-is:

1. In a jacquard mechanism comprising a series of laced-together cards having guide apertures adjacent the ends thereof; a rotary card drum having cylindrical end portions of less diameter than an inscribed circle of the prismatic main portion, longitudinally adjustable sleeves on said cylindrical portions having card-bearing ends of an exterior diameter corresponding with said inscribed circle and provided with conical guide-pin projections, and means for securing said sleeves in longitudinally adjusted position upon the drum.

2. In a jacquard mechanism comprising a series of laced-together cards having guide apertures adjacent the ends thereof; a rosaid inscribed circle and a reduced lacetary card drum having cylindrical end porclearing diameter adjacent the same; and tions of less diameter than an inscribed cirmeans for securing said sleeves in longitu- 10 cle of the prismatic main portion; longidinally adjusted positions upon the drum.

5 tudinally adjustable sleeves on said cylin- In testimony whereof I aifix my signature.

drical portions having card-bearing ends of an exterior diameter corresponding With HENRY J ANSSEN. 

